/*
 *
 * Copyright (c) 1996,1997
 * Silicon Graphics Computer Systems, Inc.
 *
 * Copyright (c) 1997
 * Moscow Center for SPARC Technology
 *
 * Copyright (c) 1999 
 * Boris Fomitchev
 *
 * This material is provided "as is", with absolutely no warranty expressed
 * or implied. Any use is at your own risk.
 *
 * Permission to use or copy this software for any purpose is hereby granted 
 * without fee, provided the above notices are retained on all copies.
 * Permission to modify the code and to distribute modified code is granted,
 * provided the above notices are retained, and a notice that the code was
 * modified is included with the above copyright notice.
 *
 */

/* NOTE: This is an internal header file, included by other STL headers.
 *   You should not attempt to use it directly.
 */

#ifndef __SGI_STL_INTERNAL_SLIST_BASE_H
#define __SGI_STL_INTERNAL_SLIST_BASE_H

#ifndef __STLPORT_CSTDDEF
#include <cstddef>
#endif

__STL_BEGIN_NAMESPACE 

struct _Slist_node_base
{
  _Slist_node_base* _M_next;
};

inline _Slist_node_base*
__slist_make_link(_Slist_node_base* __prev_node,
                  _Slist_node_base* __new_node)
{
  __new_node->_M_next = __prev_node->_M_next;
  __prev_node->_M_next = __new_node;
  return __new_node;
}


template <class _Dummy>
struct _Sl_global {
  // those used to be global functions 
  // moved here to reduce code bloat without templatizing _Slist_iterator_base
  static size_t size(_Slist_node_base* __node);
  static _Slist_node_base* __reverse(_Slist_node_base* __node);
  static void __splice_after(_Slist_node_base* __pos,
			     _Slist_node_base* __before_first,
			     _Slist_node_base* __before_last);
  
  static void __splice_after(_Slist_node_base* __pos, _Slist_node_base* __head);

  static _Slist_node_base* __previous(_Slist_node_base* __head,
				      const _Slist_node_base* __node);
  static const _Slist_node_base* __previous(const _Slist_node_base* __head,
					    const _Slist_node_base* __node) {
    return _Sl_global<_Dummy>::__previous((_Slist_node_base*)__head, __node);
  }
};

typedef _Sl_global<bool> _Sl_global_inst;

__STL_END_NAMESPACE

# if !defined (__STL_LINK_TIME_INSTANTIATION)
#  include <stl_slist_base.c>
# endif

#endif /* __SGI_STL_INTERNAL_SLIST_BASE_H */

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